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Mypy type hinting error for direct column type annotations with Polars

bugSomething isn't workingSomething isn't working

Status: Open.

#2297 In unionai-oss/pandera;

· Girmii opened on Apr 16, 2026

ibis validation fails checks if column all nulls

bugSomething isn't workingSomething isn't working

Status: Open.

#2294 In unionai-oss/pandera;

· gabrielecalvo opened on Apr 15, 2026

validation on StringDtype columns allow any object

bugSomething isn't workingSomething isn't working

Status: Open.

#2293 In unionai-oss/pandera;

· heckstrahler opened on Apr 15, 2026

Support pyarrow Table

enhancementNew feature or requestNew feature or request

Status: Open.

#2264 In unionai-oss/pandera;

· ljstrnadiii opened on Apr 6, 2026

Type hint warning for Polars List/Array in Column dtype

bugSomething isn't workingSomething isn't working

Status: Open.

#2172 In unionai-oss/pandera;

· chapmacl opened on Nov 20, 2025

Parsers (pre-processing) do not run if validation is disabled

questionFurther information is requestedFurther information is requested

Status: Open.

#2161 In unionai-oss/pandera;

· libklein opened on Oct 26, 2025

Data type checks only generate failure cases when nullable is set to false (pyspark.pandas)

bugSomething isn't workingSomething isn't working

Status: Open.

#2150 In unionai-oss/pandera;

· kukuhsetiawan-ec opened on Oct 9, 2025

pandera-geopandas downgrades geopandas to version 0.9 when installing from conda-forge

bugSomething isn't workingSomething isn't working

Status: Open.

#2147 In unionai-oss/pandera;

· Iberlauf opened on Sep 27, 2025

Include error output in DataFrameSchema.to_json() / to_yaml() + Read error from yaml / json files

enhancementNew feature or requestNew feature or request

Status: Open.

#2143 In unionai-oss/pandera;

· wyfok opened on Sep 22, 2025

required columns are *not* added when using add_missing_columns

docs

Status: Open.

#2137 In unionai-oss/pandera;

· JensHeinrich opened on Sep 11, 2025

Numpy monkey patches

bugSomething isn't workingSomething isn't working

Status: Open.

#2134 In unionai-oss/pandera;

· StephenJamesCashen opened on Sep 10, 2025

Why is unique not stored as property in FieldInfo?

questionFurther information is requestedFurther information is requested

Status: Open.

#2128 In unionai-oss/pandera;

· jCabala opened on Sep 1, 2025